U.S. Air Force Senior Airman Matthew McCarthy low crawls under a wood barrier as Staff Sgt. Cory Bobo follows while Senior Airmen Paulo Giraldo and Erin Kinney jump a 4-foot jersey barrier during a Defender Challenge course on an air base in Southwest Asia, April 25, 2009. McCarthy, Bobo and Giraldo are assigned to the 380th Expeditionary Civil Engineer Squadron, and Kinney is assigned to the 380th Expeditionary Security Forces Squadron. The team won the competition, beating the second-place team by one second. U.S. Air Force Senior Airman Matthew McCarthy low crawls under a wood barrier as Staff Sgt. Cory Bobo follows while Senior Airmen Paulo Giraldo and Erin Kinney jump a 4-foot jersey barrier during a Defender Challenge course on an air base in Southwest Asia, April 25, 2009. McCarthy, Bobo and Giraldo are assigned to the 380th Expeditionary Civil Engineer Squadron, and Kinney is assigned to the 380th Expeditionary Security Forces Squadron. The team won the competition, beating the second-place team by one second. SHARE: Download: Full Size (2.22 MB) Tags: Photo Essays Credit: VIRIN: 886273-Z-CGB70-896.jpg Photo Gallery